基于BioWin对AAO-MBR工艺的生物除磷优化  

Optimization of Biological Phosphorus Removal in AAO-MBR Process Using BioWin Simulation

作　　者：欧阳卓明 罗凡[1] 孙先昌 刘颖 周爱姣[1] 曾丽虹 OUYANG Zhuo-ming;LUO Fan;SUN Xian-chang;LIU Ying;ZHOU Ai-jiao;ZENG Li-hong(School of Environmental Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;Wuhan Ecological Environment Science and Technology Center,Wuhan 430014,China)

机构地区：[1]华中科技大学环境科学与工程学院,湖北武汉430074 [2]武汉市生态环境科技中心,湖北武汉430014

出　　处：《中国给水排水》2025年第7期82-88,共7页China Water & Wastewater

摘　　要：针对武汉市某污水处理厂的AAO-MBR工艺,基于BioWin 6.0建立污水厂全流程水质动力学模型。对污水进行表征并根据STOWA协议校准模型。使用一整年数据的动态模拟对模型精确度进行验证,结果显示该模型的精度是可以接受的。针对该AAO-MBR工艺出水TP不稳定的问题,对好氧区DO浓度、系统排泥量、各级回流量等不同工况分别进行模拟,结果表明,根据进水温度分时段调整工艺运行工况,当水温在20℃以上时,降低好氧区曝气量,减小混合液回流量与系统排泥量;当水温在20℃以下时,维持现状运行工况,以保证出水总氮与氨氮浓度达到国家一级A标准。在此优化策略下,模型模拟结果显示,在不投加除磷药剂情况下,系统的生物除磷率均值从42%提高到59%,同时全年的氨氮和总氮达标率均为100%。Targeting the anaerobic-anoxic-oxic membrane bioreactor(AAO-MBR)process at a wastewater treatment plant in Wuhan,a water quality dynamic model for the entire process was developed utilizing BioWin 6.0.The wastewater was characterized and the model was calibrated in accordance with the STOWA protocol.The accuracy of the model was validated through dynamic simulation utilizing a full year’s dataset.The results indicated that the model demonstrated satisfactory performance.To address the issue of unstable TP removal in the AAO-MBR process,simulations were conducted under different operating conditions with varying the dissolved oxygen(DO)in the oxic zone,sludge discharge of the system,and the reflux rates at various stages of the process.Based on the influent temperature,the process operation parameters were adjusted accordingly during different periods.When the influent temperature exceeded 20℃,the aeration rate in the oxic zone,the reflux rate of the mixed liquor and sludge discharge were decreased.Conversely,when the influent temperature was below 20℃,current operating conditions were maintained to ensure that the total nitrogen and ammonia nitrogen in the effluent met the first level A criteria specified in the national discharge standard.Under this optimization strategy,the model simulation results indicated that the mean biological phosphorus removal efficiency of the system was increased from 42%to 59%,while the annual compliance rate of ammonia nitrogen and total nitrogen in the effluent both reached 100%.

关 键 词：AAO-MBR工艺 BioWin模拟 生物除磷 工艺优化 影响因素 

分 类 号：TU992[建筑科学—市政工程]